x2ap: implement x2setuprequest, x2setupresponse, x2setupfailure

2018-09-21 15:58:36 +02:00
parent 938e0242e2
commit 2c27a38dc3
18 changed files with 1378 additions and 35 deletions
@@ -0,0 +1,127 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#include <stdio.h>
+
+#include "assertions.h"
+#include "intertask_interface.h"
+#include "x2ap_common.h"
+#include "x2ap_eNB_decoder.h"
+
+static int x2ap_eNB_decode_initiating_message(X2AP_X2AP_PDU_t *pdu)
+{
+  DevAssert(pdu != NULL);
+
+  switch(pdu->choice.initiatingMessage.procedureCode) {
+
+    case X2AP_ProcedureCode_id_x2Setup:
+      asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_X2AP_X2AP_PDU, pdu);
+      X2AP_INFO("x2ap_eNB_decode_initiating_message!\n");
+      break;
+
+    default:
+      X2AP_ERROR("Unknown procedure ID (%d) for initiating message\n",
+                  (int)pdu->choice.initiatingMessage.procedureCode);
+      AssertFatal( 0, "Unknown procedure ID (%d) for initiating message\n",
+                   (int)pdu->choice.initiatingMessage.procedureCode);
+      return -1;
+  }
+
+  return 0;
+}
+
+static int x2ap_eNB_decode_successful_outcome(X2AP_X2AP_PDU_t *pdu)
+{
+  DevAssert(pdu != NULL);
+
+  switch(pdu->choice.successfulOutcome.procedureCode) {
+    case X2AP_ProcedureCode_id_x2Setup:
+      asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_X2AP_X2AP_PDU, pdu);
+      X2AP_INFO("x2ap_eNB_decode_successfuloutcome_message!\n");
+      break;
+
+    default:
+      X2AP_ERROR("Unknown procedure ID (%d) for successfull outcome message\n",
+                  (int)pdu->choice.successfulOutcome.procedureCode);
+      return -1;
+  }
+
+  return 0;
+}
+
+static int x2ap_eNB_decode_unsuccessful_outcome(X2AP_X2AP_PDU_t *pdu)
+{
+  DevAssert(pdu != NULL);
+
+  switch(pdu->choice.unsuccessfulOutcome.procedureCode) {
+    case X2AP_ProcedureCode_id_x2Setup:
+      asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_X2AP_X2AP_PDU, pdu);
+      X2AP_INFO("x2ap_eNB_decode_unsuccessfuloutcome_message!\n");
+      break;
+
+    default:
+       X2AP_ERROR("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
+                  (int)pdu->choice.unsuccessfulOutcome.procedureCode);
+      return -1;
+  }
+
+  return 0;
+}
+
+int x2ap_eNB_decode_pdu(X2AP_X2AP_PDU_t *pdu, const uint8_t *const buffer, uint32_t length)
+{
+  asn_dec_rval_t dec_ret;
+
+  DevAssert(buffer != NULL);
+
+  dec_ret = aper_decode(NULL,
+                        &asn_DEF_X2AP_X2AP_PDU,
+                        (void **)&pdu,
+                        buffer,
+                        length,
+                        0,
+                        0);
+
+  xer_fprint(stdout, &asn_DEF_X2AP_X2AP_PDU, pdu);
+
+  if (dec_ret.code != RC_OK) {
+    X2AP_ERROR("Failed to decode pdu\n");
+    return -1;
+  }
+
+  switch(pdu->present) {
+    case X2AP_X2AP_PDU_PR_initiatingMessage:
+      return x2ap_eNB_decode_initiating_message(pdu);
+
+    case X2AP_X2AP_PDU_PR_successfulOutcome:
+      return x2ap_eNB_decode_successful_outcome(pdu);
+
+    case X2AP_X2AP_PDU_PR_unsuccessfulOutcome:
+      return x2ap_eNB_decode_unsuccessful_outcome(pdu);
+
+    default:
+      X2AP_DEBUG("Unknown presence (%d) or not implemented\n", (int)pdu->present);
+      break;
+  }
+
+
+  return -1;
+}